Attachment for paper-slotting machines



ELSTAUDE Arum' Fon 'rusa sLoTTnm camas med vga/:5L ma V 5 sheets-snm 1 lInventor B dwi G Stande 1 orne s Oct. 1 1928. f

la. G. sTAuD: ATTACHHENT FOR PAPER SLOTTIN IACHINBS 'Filed Dec. 31, Y12:s 5 sheets-sheet 2 u N n iger.

. Edwin Stande I' Attorneys Oct. 16,. 1928. 1,687,522

E. G. sTAUpE ATTACHHEN'T FOR PAPER; $LOTTING MACHINES .v

' Filed Dec. :51, -1925 5V Sheets-sheet 4 ,-9 -j A9v 57` E ff I 58 E: 9-58'@ d52 52 MMU L FIG. 9

n ujn n vE' Stande B 4 y Atrrfegw Ocl, 1928.

E. G. STAUDE ATTACHIENT FOR YAPER SLOTTING MACHINES .5 Sheets-Sheet 5Filed D66. 31. 1923 Inventor 1 Fwing Stande By J w! Aff rneys lPatentedt. 16, 192.8..

treatin 'EDWIN e. srAUnE, oFMrNNEnroms', rrrnnnso'ra ATTCBENT FR'.EAPER-SILOWLIIQ'G' MACHINES. l

Appucamn mea reemner 31, i923.. serial No. 683,773.

My invention relates to machines for slottingpaper blanks generally andis particularly adapted for use in the manufacture of corrugated or bercontainers andlike ar-4 ticles.

My present invention is an improvement over the invention described andclaimed in Letters Patent'of the United States, issued to me J une 6,1922, #1,418,844.

1o The ,object of my present invention is to f simplify andimprove thedevice of my for# mer patent by providing means for positivelycutting'the tongues' or strips to form the slot without the necessity ofusing timing gears which require accurate adjustment to properly coactwith a knife or die.

A further object is to `provide-a slotting` head wherein the distancebetween the upper and lower slot in the blank may be variedby adjustmentofthe knives.

A further object is to proyide a cutting knife by the operation of whichthe material maybe bent into the bottom of the lower die and cut off bythe anvil" knife without i tearing.

' A further object is to provide for the feed of stock of varyingthickness and construcvtioii of slottin head which can be taken apartfor grin ing or sharpening the cutting edges. l.

A further Objectis to provide Vmeans to prevent stock from winding onthe upper vslotting .headand an improved feeding, devicefor operation incombination with the slotting heads.

The invention consists generally -in various constructionsfandcombinations all as hereinafter described fand particularly pointed outinthe claims. j L l In the accompanying drawings forming part of thisspecification,

'Figure 1 is a planview of a-container, blank-slotting andparallel-creasing machine;

Figure 2 is a longitudinal sectional view on the line A-B -of Figure 1looking in the direction of the arrow; j

Figure 3 is an enlarged section through a portion ofthe automatic feederand thefslot- 5u tingheads looking in the opposite direction from theview in Figure 2;

Figure 4 is a rear view `of the slotting head showing the position oftheslotting knives and cut-off knife;

' been performed.

for, lateral adjustment.

1, bearing against the dis vdriven by bevel gears 20 an 21.

Figure 5 is a view similar to Figure 4; showingv al plurality of theslotting heads one of them being shown in section;

vFigure 6 is a detail sectional view of the' upper portion of the lowerdie; v

4Figure 7 is a view similar to Figure 6 taken on the'line direction ofthe arrow; Y v

Figure 8 is an enlarged view of the cutting heads.; i

, Figure 9 is a plan view of an ordinary container blank after theslottingoperation has In the drawing, 2 and S represent the left andright frames of the machine held together by suitable spreaders 4: andconnecting bars 5 which insure the necessary rigidity. 6 isa drive shafton which as' set screws 7 see shaft 6 is a shaft 8 on which the uppercutting lead 9 is mounted and secured by a suitable key 10 held in placeby set screw 11, said key operating in a groove in the shaft 8 to allowA clutch pulley 12, Figure 1, is mounted on the shaft 6 and a suitabletrain of gears the respective shafts able shaft 14 which operates thefeed chains 24 to move the blanks one at .a time out of the hopper.Shafts-15` andr16 upon which are mounted parallel "creasing rolls arealso driven from the gears driven by a variable' friction wheel 18,Figure wheel 19 and The gear 21 is driven by a spur gear'22 and takesits power from the shaft 6. -On the shaft 14: are suitable sprockets 23carrying the said feeder chains 24 having thereon a short bar 25 which;is adapted to contact with the rear' the blank after it is slottedthrough the creas#v ing rolls 31 and 32 and from these rolls the blankpasses'to a slow moving convev or33, operating on pulleys 34 supported ythe shaft 17. 35 indicatesa suitable manufacthe lower cutting dies- 7are mounted, secured by suitable means such Figure 8.. Above the 13,Figure 1, drives. 6 and 8 and also a suit-- 13. A shaft 17 is turerscertificate printing apparatus. The stock is prevented from winding onthe upper cutting heads 9 by stripper bars 36, see Fig ure 2.

Referring to Figures 3 to-8 in which the cutting heads are particularlyshown,l it will be noted that as the chains 24 advance the lower blankinto the cutting heads, the knife 37, see Figure 3, mounted in the uppercutting head coacting with the groove 38 in the lower die 7 will cutalong both sides of t-he tongue, and at the one end of the knife 37 achisel-shaped cutting edge 39 is provided extending transversely of theknife, and c oacting with the bottom 40 of the slot 38 cuts across t-hetongue formed by the knife 37 leaving it depending by' a narrow piece ofstock corresponding in width to the. groove 41 in the bottom of theslot. The knife 37 cooperating with both sides of the slot 38 will cutout the sides of the tongue and 'the cutting edge .39 striking thebot-tom 40 of the slot will Sever, the. stock except where it lies overthe narrow groove 41, thev partially sev ered tongue dropping into thisgroove and being removed by the clean-out device 42.

f theh The cutting edge 39 'does not entire ly Vsever the end o f thetongue but the material is so nearly severed that it will be held byfriction against the side walls of the groove and will `pull away fromthe blank and be removed by the clean-out device.

I regard this tongue-cutting device a valuable feature of the machine asit does away with the high fang tooth in general use on machines of thistype which is intended to penetrate the material before the sides ofthel .tongue are completely severed. This form of tooth has a tendencylto tear the rear endof the slot in the revolution of the upper head. Mylimprovement'makes a clean cut ofthe tongue and the slot zis always thesame depth ,and no timing gears are required, the use of whichreventsrapid adjustment .of the ma,` chine or different sizes of work.Furthermore, the use of timing gears necessitates ears treme careinadjustment to make the coact-- in knives register roperly. e shaft 8is adliusted so that the cutting edge 39 will touch the bottom 40. Nofurther adjustment of theuppe and lower cuttingy heads'bein provided tocompensate for tlie 'diiferent t icknesses .of stock, I provide a band`or tire 43 of yielding material on the lower; slot head 7 that is adated to yield and allow'ftlxe material to be fed) evenly between ea s.For the purpose of assembling the lower cutting head and providing meansfor sharpflA eningfthe cutting edges,4 I provide the part 44 with athread portion 45 and a locking ring 46, see Fi re 7, and between thelocking, ring and t e wall of the part 44,1 arrange `the ring 40 formingthe bottom of the slot 38 and with which fthe cutting edge 39 contactsof the slot 38 Aand the ring 47 for sharpening.

purposes. The ringl46 is tightened by a spanner wrench fitting slots 48,see Figure 9.

'lo cut a deep slot in they blank of greater length than the knife 37 Iprovide additional knives 49 and 50,- see Figure 8, mounted on suitableblocks in alinement "with knife'37 and' removable from the cutting head,but adapt-ed as shown in Figure 3 to form a continuation of the knife37. To cut a short slot the knives 49 and 50 may be removed. Upon theopposite side of the cutting head,I provide knives 51, 52 and 53; theknife 51l having a raised cutting edge 54 corresponding to the edge 39except that itis extended in the.

opposite direction.

To vary the distance between edges ferent sizes, I loosen the cap screws55, see

"igure 5, to slide freely inthe bevel groove 57, see F igure-8. When theknives have been properly adjusted, clamp the cap screws, thereby firmlyholding the knives in their cutting position. To facilitatethe'adjustment of the cutting edges 39 and 54, I prefer to provide agraduated scale- 58 on the upper cutting head, see Figure 5. A line 59.is provided on the'block 51 and when the block is adjusted So that theline 59 registers with the line 5 of the scale, the operator willunderstand that the distance between the cutting edges 39 and 54,is-exactly flve inches. VI with this, arrangement tovery quickly andaccuratelyadjust the knives for the varying sizes of stock and articlesto be-cut.

various ways, the details'of construction heremshown and 4'described maybe modified and still be within the scope of my invention.

I claim asmy invention: 1.- A paper stock slotting machine compris-ving-a revolving member havin :a peripheral slot Iprovided with cuttingvrevolving the cutting y ges, a second i member, a kmfe mounted thereon39 and 54 for cutting blanks of difto permit the nut 56, see Figure 8,"

am therefore able i between-which and the edges of said slot thev1Iiiplper stock is sheared to form a tongue, said adapted to partiallysever saidton e trans'- lle' fe having a transverse' cutting edge,"-' Y'versely from the stockanfd a cleamng device y .operating in vl,said slotnearer the axis of said revolving'1 member'than said cuttingedge toengage t e tongue so partially severed and remove it froms'aidslot, tr'stock slotting machine compris- 2. Apa" ing a reve vingnember having'aperipheral slot provided lwith cutting edges and-.a fiat bottom,ai-second revolving member, a knife munted 'thereon'between which andthe edges of, said slot the .paper stock is sheared to'forx a tongue,said knife having a (trans-- veres cutting edge to enten'said slot andengage said tongue between it and the bottom f or said slot to make apartial separation of the tongue from vthe stock, and'means opslotthepaper slot. l

3. A paper stock slotting machine compris said knife' having a eratin'gnearer theaxis of said first-named revolving member than-said cuttingedge to complete the removal of the tongue om said ing a revolvingvmember having a peripheral slot provided with cutting vedges and a com-,slot provided with cutting edges and a dat bottom having a narrowgroove therein, a second revolving member, a knife mounted thereonbetween which and the edges of said stock is sheared to form atongue,`sai-d knife having a transverse cutting edge adapted to entersaid slot and sever said tongue transversely from the stock except orthat portion thereof over said groove, and a yielding' means interposed'between said revolving members -tocompensate for variation in thethickness of the stock,

5. A paper stock slotting machine comprisslot provided with cuttingedges and a comparatively narrow groove in the bottom of saidslot, asecond revolving member, knives mounted thereon between which` and theedges of said slot the paper stock is sheared,

said knives having transverse cutting edges adapted to enter said slotand cooperate with the bottom tlie're'o and with said groove topartially sever the tongue formed in said slot by said knives, said4knives having means adapting them for circumferential adjustmenttowardand from each other to. cut slots of different sizes. i f

6. A paper stock slotting machine compris-' ing al revolving memberhaving a peripheral' -slot provided with cutting edges andacomparatively narrow groove. in vthe bottom of said slot, a secondrevolving member, knives mounted thereon between which and the edges ofsaid slot the paper stock is sheared,

said knives having transverse cutting edges' said slot and cooperatewithl the bottom thereof and with said groove to-j adapted to enterpartially sever the tongue formed in said slot y said knife, said kniveshaving means` i adapting them for circumferential adjustment toward andiromeach other to cut slots vodiier'ent sizes, and a scale devicewhereby ing a revolving member having a peripheral( so separated.

the desired adjustment of said knives may be determined. f

7 A paper stock slotting-machine com-pris ing a revolving member havinga peripheral slot providedwith cutting edges and a comparatively narrowgroove in said slot, a second revolving member, a knife mounted thereonbetween which and the edges of said slot the paper stock is .sheared,

.said knife having transverse cutting edges adapted to enter said slotand cooperate with the .bottom thereof to-sever the tongue formed bysaid knife upon botlisides of said groove and cause said tongue to dropinto said groove, and a clean-out device opera-ting: Vin said groove andadapted-to remove the tongue from said groove and the stock.

8.- A paper stock slottin machine comprising a revolving member aving anQannular recess at one end, a ring of less diameter than said memberfitting within said recess and having a n arrow peripheral groovetherein, a second ring of substantially the .same diameter as saidmember seatediagainst saidirst named ring, and forming with the oppositewall of said recess an annular slot, means for locking said ringstogether and allowing 4their convenient removal and access to the edgesof said recess, a second revolving member, a knife mounted thereon thebottom of.

adapted to enter said slot and having longitudinal edges to cooperatewith the' edge of said recess'and the opposite edge of said second ringto makea shear cut, and said -knife having a transverse cutting edgeprovjecting beyond said longitudinaledges-and cooperating with thelbottom of said slot to sever the tongue formed by said knife. on bothsides of the groove in said iirst named ring.

9. A paper stock slotting machine comprising a revolving member havingperipheral slots therein provided without/tin and comparatively narrowgrooves in t e bottoms of said slots, a second revolving member, knivesmounted thereon adapted to register with said slots and make a shear'cutof the stock with tlie-ed es of said slot, the tongues cut out by saiknives being severed upon both sides of said g'ooves and drop ing` 'intosaid grooves, and

the-stock by frictional engagement with the walls of'said slots, andclean-out devices operatingin said grooves to remove said tongues 10. Apaper s ck slotting machine comprising a revolving member having aperipheral slot provided with cutting e ges, a'second revolving member,a knife mounted thereon between which and thje edges vo saidv slot thepaper stock is s heared to 'form a tongue, andsaid knife havingatransverse cutting ed e projecting outwardly beyond its shearing eges-and edges cooperative with the bot-A toni of the slot of the firstmentionedrevolvi iis eingremoved rom y ing member and adaped topartially 'sever said tongue from the stock. j

11. A paper blank slotting machine comprising a revolvingmember having aperipheral slot provided With cutting edges, a second revolving member,a knife mounted thereon and adapted to enter said slot and cooperateWith-the edges thereofto make a shear c ut in the blank fed betweenthem, and means projecting beyond said shearing edges and cooperatingWith the bottom of said slot for partially severing thel tongue cut fromsaid ,slot at its junction With'the blank.

12. A paper stock slotting machine comprising a revolving memberhavi-nga peripheral slot provided with cutting edges, a second revolvingmember, a knife mounted thereon between which and the edges of said slotthe paper `stock is sheared to form a tongue, said knife having atransverse cutting-edge adapted to enter said slot and cof operate withthe bottom thereof to partially sever said tongue transversely of thestock, and a'yielding means interposed between said revolving members tocompensate for variation in the thick-ness of the stock.

13. A paper stock slotting device, comprising a rotatable member havingaperipheral slot, a second rotatable member having a radial blade, as anannular segment slidably fitting within the slot of the first member,said segment having a transverseA peripherally raised portion, as acutting edge adapted to engage the bottom of the slot, the edges of saidslot and blade cooperating to shear th material as the members arerotated'. 14. A paper stock slotting device, comprising a rotatablemember having a peripheral slot, a second rotatable member 4having aradial blade, as an annular segment slidably fitting Within the slot ofthe first member, said segment having a transverse peripheral- 1y raisedportion, as a cutting edge adapted y:,aevasaa to engage the bottom oftheslot, the edges of said slot and blade 'cooperating to shear thematerial as the members are rotated, and a band of resilientmaterial'surrounding one of said rotatable members.

15. Akdevice of the class described, comprising a disk having laterminal counterturned portion, an annulus seated upon said portion andhaving a peripheral groove there.- in, and of less diameter than thedisk, a second annulus of the same diameter as the disk, also seatedupon said portion and abutting said first annulus, and a third annulusclampingly. securing the annuli, and said annuli being substantiallyrectangular in cross section. v

16. A device of the class described, comprising a disk having aperipheral circumferential groove, said groove having a circumerentialdove-tail groove in its bottom, a pluralityy of segmentalannularshearing elements circumferentially adjustable in said first-groove andprojecting beyond the periphery ot' the disk, and having clampingportions slidable in the dove-tail groove, the peripheryA of .certain ofsaid shearing elements' having a peripherally raised transverse portionproviding a transverse cutting edge.

17. A device of the class described, comprising a rotatablecutter diskhaving a peripheral groove therein, a second cutter disk having acircumferential blade, said blade and groove cooperating to shear thestock,

said blade having a transversely disposed cutting edge adapted to engagethe bottom of the groove, and said blade circumferentially adjustable,and said blade and disk havinggraduations for obtaining accurate circum.

ferential adjustment of the blade.

In Witness vvhereof, I have hereunto set my hand this 26th day ofDecember, 1923.

v EDWIN G. STAUDE.

